Report Summary

  • 82

    Performance

    Renders faster than
    88% of other websites

  • 51

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    18% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

buch-der-synergie.de

Achmed Khammas - Das Buch der Synergie

Page Load Speed

2.5 sec in total

First Response

373 ms

Resources Loaded

1.4 sec

Page Rendered

760 ms

buch-der-synergie.de screenshot

About Website

Visit buch-der-synergie.de now to see the best up-to-date Buch Der Synergie content for Germany and also check out these interesting facts you probably never knew about buch-der-synergie.de

In der vorliegenden Arbeit werden alle Systeme der Erneuerbaren Energie aus Praxis und Forschung vorgestellt, ebenso ihre Geschichte und ihre Entwicklungen, der Grad ihrer tatsächlichen Anwendungen un...

Visit buch-der-synergie.de

Key Findings

We analyzed Buch-der-synergie.de page load time and found that the first response time was 373 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

buch-der-synergie.de performance score

82

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

53/100

10%

LCP (Largest Contentful Paint)

Value2.9 s

80/100

25%

SI (Speed Index)

Value3.4 s

89/100

10%

TBT (Total Blocking Time)

Value290 ms

80/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value4.1 s

86/100

10%

Network Requests Diagram

buch-der-synergie.de

373 ms

layout_3col_vlines.css

95 ms

brand

15 ms

synergie_logo.jpg

269 ms

pfeil_links.jpg

183 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 51% of them (21 requests) were addressed to the original Buch-der-synergie.de, 29% (12 requests) were made to Appsgeyser.com and 5% (2 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (549 ms) belongs to the original domain Buch-der-synergie.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 546.5 kB (81%)

Content Size

678.6 kB

After Optimization

132.1 kB

In fact, the total size of Buch-der-synergie.de main page is 678.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 20% of websites need less resources to load. Images take 303.5 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 33.6 kB

  • Original 46.0 kB
  • After minification 39.9 kB
  • After compression 12.4 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 6.2 kB, which is 13% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 33.6 kB or 73% of the original size.

Image Optimization

-82%

Potential reduce by 248.1 kB

  • Original 303.5 kB
  • After minification 55.5 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Buch Der Synergie needs image optimization as it can save up to 248.1 kB or 82% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-79%

Potential reduce by 222.0 kB

  • Original 279.7 kB
  • After minification 158.6 kB
  • After compression 57.7 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 222.0 kB or 79% of the original size.

CSS Optimization

-87%

Potential reduce by 42.9 kB

  • Original 49.3 kB
  • After minification 23.6 kB
  • After compression 6.4 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Buch-der-synergie.de needs all CSS files to be minified and compressed as it can save up to 42.9 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (53%)

Requests Now

38

After Optimization

18

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Buch Der Synergie. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

buch-der-synergie.de accessibility score

51

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

buch-der-synergie.de best practices score

50

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

buch-der-synergie.de SEO score

67

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Buch-der-synergie.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Buch-der-synergie.de main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

Open Graph description is not detected on the main page of Buch Der Synergie. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: